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Finding the Fourth Proportional to 133,070.80, 199,606.20 and 66,521.20

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Solution

The fourth proportional to 133,070.80, 199,606.20 and 66,521.20 is: 99,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,070.80 : 199,606.20 = 66,521.20 : x
  2. Step 2: Convert to fraction form
    133,070.80/199,606.20 = 66,521.20/x
  3. Step 3: Cross multiply
    133,070.80x = 199,606.20 × 66,521.20
  4. Step 4: Simplify right side
    133,070.80x = 13,278,043,951.44
  5. Step 5: Solve for x
    x = 13,278,043,951.44/133,070.80
  6. Step 6: Final answer
    x = 99,781.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.